Migraine and Acupuncture: A migraine is a particularly painful type of headache, which patientssometimes wish to treat with acupuncture. To determine whether acupuncture relieves migraine pain,researchers conducted a randomized controlled study where 155 patients diagnosed with migraineheadaches were randomly assigned to one of two groups: treatment or control. 68 patients in thetreatment group received acupuncture that is specifically designed to treat migraines. 87 patients in thecontrol group received placebo acupuncture (needle insertion at non-acupoint locations). 24 hours afterpatients received acupuncture, they were asked if they were pain free. Results are summarized in thecontingency table below. Test to see if migraine pain relief is dependent on receiving acupuncture. Use a =0.01.TreatmentControlTotalPain Free: Yes Pain Free: No194978026129a) What is the correct null hypothesis?O Ho: P1 P2 = P3 P4O Ho: Migraine pain relief is dependent on receiving acupuncture.O Ho: Migraine pain relief is independent on receiving acupuncture.O Ho: P1 P2 P3 P4ExpectedValuesTreatmentb) Fill in the expected values, round answers to at least 1 decimal place.ControlTotal6887155Pain Free: YesPain Free: Noc) Find the test statistic, round answer to at least 2 decimal places.d) What is the P-value? (Round answer to at least 3 decimal places)e) What is the correct conclusion?O There is statistical evidence that migraine pain relief is dependent on receiving acupuncture.O There is no statistical evidence that migraine pain relief is dependent on receiving acupuncture.

By applying the Chi-square test for independence, Given, Observed frequency (O) Table:

Answered: ligraine and Acupuncture: A migraine is…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The Comprehensive Assessment of Outcomes in Statistics (CAOS) exam is an online multiple-choice teston concepts covered in a typical introductory statistics course. Students can take a pretest version beforeinstruction and then a posttest version after instruction. Fter taking the class, the pretest and posttest scoresare compared to assess student learning in the course.For a random sample of 10 students who took the class from Professor X, the posttest scores increased overthe pretest score by an average of 14 percentage points, with a standard deviation of 6.4 points. a) What additional information (if any!) do we need to know in order to use t-based methods from thisdata set? b) Compute a 95% confidence interval for the mean improvement in CAOS scores for students who tookthe class from Profesor X. c) The developers of the CAOS exam report that, for all students who have taken the CAOS exam (andnot just Professor X’s students), the mean improvment is 10.1. Do we have evidence to…
A 9-year-old girl did a science fair experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under her hand without seeing it and without touching it. Among 274 trials, the touch therapists were correct 116 times. Use a 0.05 significance level to test the given hypotheses? HO: p = 0.5 HI: P# 0.5

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